Cita APA (7a ed.)

Wittgenstein, L. (1967). Philosophical investigations. Blackwell.

Cita Chicago Style (17a ed.)

Wittgenstein, Ludwig. Philosophical Investigations. Oxford: Blackwell, 1967.

Cita MLA (8a ed.)

Wittgenstein, Ludwig. Philosophical Investigations. Blackwell, 1967.